[infra] Translate _sources.gypi files to _sources.gni files

sdk/lib/vmservice/vmservice_sources.gypi

Index: sdk/lib/vmservice/vmservice_sources.gypi
diff --git a/sdk/lib/vmservice/vmservice_sources.gypi b/sdk/lib/vmservice/vmservice_sources.gypi
deleted file mode 100644
index 41f33f60c5a2c161dc620027fed38f02a1680930..0000000000000000000000000000000000000000
--- a/sdk/lib/vmservice/vmservice_sources.gypi
+++ /dev/null
@@ -1,21 +0,0 @@
-# Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
-# for details. All rights reserved. Use of this source code is governed by a
-# BSD-style license that can be found in the LICENSE file.
-
-# Sources that make up the library "dart:_vmservice".
-
-{
-  'sources': [
-    'vmservice.dart',
-    # The above file needs to be first as it imports required libraries.
-    'asset.dart',
-    'client.dart',
-    'constants.dart',
-    'devfs.dart',
-    'running_isolate.dart',
-    'running_isolates.dart',
-    'message.dart',
-    'message_router.dart',
-    'named_lookup.dart',
-  ],
-}